#include <stdlib.h>

#include <deque>

using namespace std;

int main ()
{
   deque <int> kk;

   kk.push_back (10);
   kk.push_back (20);
   kk.push_back (30);

   printf ("Size: %d\n", kk.size ());

   kk.pop_front ();
   printf ("Size2: %d\n", kk.size ());

   return 0;
}


